Kev Kho Hniav burs thiab burs yog dav siv rau kev ua cov dentin, cov ntaub ntawv sib xyaw, ceramics, cement, hlau alloys thiab lwm yam khoom siv hauv kev kho hniav. Los ntawm kev sib hloov, cov abrasive grinds, polishes, grinds, txiav, npaj los yog theem saum npoo. Milling cutters thiab burs txawv nyob rau hauv lub cev yam ntxwv thiab scope. Cia peb mus saib lawv qhov ntau thiab tsawg.
Ntau yam ntawm cov hniav abrasives
Kho hniav cutters nrog pob zeb diamond yog siv rau kev npaj enamel thiab ua cov ceramics. Tom qab sib tsoo, qhov saum npoo tseem ntxhib.
Taws nrog tungsten carbide yog qhov tsim nyog rau txheej txheej los ntawm txheej txiav ntawm cov hlau yas, dentin. Qhov saum npoo tseem du, yog li ua tiav burs yog tsim nyog rau kev ua tiav lub teeb-kho filling.
Carborundum abrasives yog tsim rau kev sib tsoo ceramics thiab porcelain crowns. Lawv haumrau ua cov yas, dentine thiab precious hlau crowns.
Kho hniav cutters nrog corundum zoo kawg nkaus txhuam cov khoom acrylic. Lawv yog siv rau kev kho dua tshiab ntawm amalgam thiab hlau crowns.
Arkansas pob zeb teb cov cuab yeej xaiv rau polishing thiab sib tsoo cov ntaub ntawv sib xyaw. Nws yog tsim rau subgingival tartar tshem tawm thiab nto npaj rau kev ua tiav.
Silicone abrasives yog tsim nyog rau kev ua tiav polishing ntawm enamel, ceramic, amalgam thiab cov khoom sib xyaw, nrog rau cov hlau muaj txiaj ntsig zoo.
Kev Kho Hniav burr manufacturing method
Galvanoplasty yog daim ntawv thov ntawm cov hmoov pob zeb diamond rau cov hlau ua haujlwm uas nyob hauv cov tshuaj electrolyte. Thaum cov hluav taws xob tam sim no dhau los ntawm cov tshuaj electrolytic, lub matrix yog tsim, mus rau cov khoom ntawm abrasive pob zeb diamond hmoov yog attracted los ntawm deposition ntawm ib tug binder hlau. Ib tug tshiab composite nto yog tsim. Kwv yees li 90% ntawm txheej txheej yog pob zeb diamond hmoov. Cov txheej txheem yog siv rau kev thov ib txheej, ob txheej thiab peb txheej txheej ntawm cov hniav burs.
Sintering yog kev tsim cov hmoov hlau txheej nrog kev sib ntxiv ntawm cov ntawv khi thiab cov nplua-grained abrasive. Qhov sib tov yog ci hauv ib daim ntawv tshwj xeeb ntawm qhov kub ntawm 650 ⁰С. Ib khob nqi yog siv los ua ib daim ntawv khi. Cov khoom siv hlau ntawm lub tshuab txiav rau kev kho hniav yog cov hmoov ntawm tooj liab, tin lossis nyiaj. Nws cov concentration ntawm qhov chaw txiavib feem tsis tshaj 50%. Thaum kawg ntawm kev ci, cov cuab yeej tau muab cov duab xav tau.
Lab tool
Rau kev kho hniav hauv chav kuaj, siv cov tshuab txiav hniav nrog cov kab mob monolithic abrasive. Ib txheej abrasive muaj zog yog tau los ntawm lub tshuab nqus tsev vacuum. Qhov siab tshaj plaws tso cai ntawm cov hmoov hlau yog concentrated rau saum npoo.
Cov cuab yeej no muaj kev ua haujlwm ruaj khov thiab ua kom lub neej ntev. Txhawm rau txhim kho cov cuab yeej txiav, helical lossis cruciform notches yog ua los ntawm kev ua haujlwm ntawm lub tshuab txiav. Tornado tshuab siv tau. Cov grooves yog tsim los ntawm cov cuab yeej los ntawm cov huab cua circulates, muab cua txias, tiv thaiv clogging ntawm burr nrog cov khoom ntawm cov ntaub so ntswg.
